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This morning, a four-car rear-end collision occurred near the Yindu exit from the north to south of the Shanghai Jiamin Viaduct. From the photos at the scene, the damage to the first two cars was relatively mild. It was suspected that the last Tesla Model3 had no time to react due to the sudden braking of the front car BYD Pro. Tesla shoveled the BYD in front directly from the rear and affected two vehicles in front, which was during the rush hour at the time of the incident, affecting both lanes on the right side of the road.

In a Wechat group conversation obtained by auto industry followers, the suspected owner of Tesla shared some pictures, videos and details about the accident. The owner said that at that time, it used Tesla's automatic auxiliary driving system Autopilot, the speed was about 80km/h, and the car following was set to 1, which also turned on the vehicle's front collision warning function, and the car accident also occurred when it was dealt with by slamming on the brakes. Judging from the photos at the scene of the accident, Tesla lifted BYD from behind. One is that the rear part of BYD's Pro is too high, or as the owner of Tesla said, the driver pressed the brakes vigorously while the vehicle was driving, and the vehicle tilted forward instantly. These two reasons made Tesla find the opportunity to get into the front car, and neither of the airbags of the two directly collided vehicles popped up. So neither the collision surface nor the collision surface produced enough force to trigger the airbag ejection.

In the final analysis, the accident was caused by Tesla following the car too much. although the car owner set such a small setting to 1, he also adopted the emergency brake treatment, reducing some speed impact, so that no one was injured. Tesla's car distance function can be set to 1-7, and the vehicle will maintain a braking distance of 1-7 seconds according to the current speed and the time in front of the car. Theoretically, when the vehicle stops, the current vehicle and the car in front will maintain a distance of about one parking space. Of course, this is only a theory, as is the case in this accident, if the car in front suddenly brakes suddenly. Then this kind of theoretical calculation does not make much sense in the face of accidents.

Ross Gable, a shareholder of Tesla, tweeted that "since the launch of the fully self-driving (FSD) Beta version a year ago, the vehicles tested have never had a traffic accident, which fully proves the professional caution of drivers and, more importantly, that the FSD system is completely safe." Tesla CEO Musk then forwarded this paragraph and affirmed the comment: really, indeed.

Tesla Autopilot system Autopilot system is currently the standard configuration of Tesla, which only provides limited auxiliary driving with automatic steering, acceleration and braking in the lane under the condition of driver's active monitoring. And the name of FSD is fully autonomous driving. Tesla began to provide this paid software service to car owners in the United States since 2020. FSD initially sold $5000 in the United States, but after several price adjustments, it has gradually risen to $8000 now. You can also use monthly subscription to rent this service, which is one of Tesla's fee growth points, compared with Autopilot. FSD has more powerful autopilot capabilities.

Tesla almost defines the ceiling of the electric car, and self-driving can be said to be the soul of the electric car, which is also one of the selling points that attract many Tesla supporters. People yearn for smarter and safer smart driving systems, and Musk said in a recent interview that FSD is expected to achieve L4 autopilot by the end of this year. Tesla uses a fast iterative upgrade method to develop and upgrade this system, but in the latest version, Musk is not very satisfied with its performance. Tesla also pointed out that there are still serious safety problems in FSD10.2, and car owners should not rely entirely on FSD for driving. These serious safety problems include the direct retrograde of the opposite lane at the complex intersection, the lack of identification of close passers-by, the sudden withdrawal from FSD while driving, the sudden change of driving route at critical moments, and so on. The National Highway Traffic Safety Administration (NHTSA) has been paying attention to Tesla's FSD function since 2019, especially for some suspected L4 propaganda, such as FSD, so the potential risks of Autopilot can also be imagined.

A few days ago, a car owner of Tesla in California was formally charged with two counts of driving homicide because of his 2019 car accident. The US Highway Safety Administration NHTSA investigation pointed out that at that time, the car owner used Autopilot and caused the accident, and the vehicle ran through the red light and crashed into another moving vehicle, killing two people in the hit vehicle, making the car owner the first Tesla Autopilot user in the United States to be prosecuted for felony. NHTSA stressed, "once again remind all car owners that no vehicle currently on the market can drive on its own, regardless of whether the Level 2 auxiliary driving function is activated or not, the owner must control the whole process and maintain attention."

Ideal car CEO Li Xiang has said that users do not understand terms such as L2 and L3, and suggest a unified name: L2 = auxiliary driving; L3 = self-driving; L4 = self-driving; L5 = self-driving, do not have a single extra Chinese character. He also suggested that exaggerated publicity should avoid misunderstandings caused by users.

In fact, some users of electric vehicles have become accustomed to using these driving aids to varying degrees in their daily driving, and have relaxed their guard against some potential risks. Technology can certainly bring convenience to people to a great extent. When people get used to the convenience of technology, the unexpected risk may be a probability for the group, and if it falls on the individual. Sometimes it can be irreparable. And this car owner in Shanghai today may also be in awe because of today's accident and keep driving carefully.

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